(390+470)Ia-470Ib=5
-470Ia+(750+470)Ib=-12
Solve for Ia
You asked:
Given the following equations: \[\begin{aligned}\left(390 + 470\right) \cdot I a - 470 I b &= 5\\ -\left( 470 I a \right) + \left(750 + 470\right) \cdot I b &= -12\end{aligned}\] Evaluate \(I a\).